CVE-2022-23645

Description

swtpm is a libtpms-based TPM emulator with socket, character device, and Linux CUSE interface. Versions prior to 0.5.3, 0.6.2, and 0.7.1 are vulnerable to out-of-bounds read. A specially crafted header of swtpm's state, where the blobheader's hdrsize indicator has an invalid value, may cause an out-of-bounds access when the byte array representing the state of the TPM is accessed. This will likely crash swtpm or prevent it from starting since the state cannot be understood. Users should upgrade to swtpm v0.5.3, v0.6.2, or v0.7.1 to receive a patch. There are currently no known workarounds.

References

https://github.com/stefanberger/swtpm/security/advisories/GHSA-2qgm-8xf4-3hqw

https://github.com/stefanberger/swtpm/commit/9f740868fc36761de27df3935513bdebf8852d19

https://github.com/stefanberger/swtpm/releases/tag/v0.5.3

https://github.com/stefanberger/swtpm/releases/tag/v0.6.2

https://github.com/stefanberger/swtpm/releases/tag/v0.7.1

https://lists.fedoraproject.org/archives/list/[email protected]/message/WL735FW266GO4C2JX4CJBOIOB7R7AY5A/

Details

Risk Information

CVSS v2

CVSS v3